Instant Broadband™ Series EtherFast® Cable/DSL Wireless-Ready with 4-Port Switch

Use this Guide to install:

BEFSR41W EtherFast Cable/DSL Wireless-Ready Router with 4-Port Switch

User Guide COPYRIGHT & TRADEMARKS Copyright © 2002 Linksys, All Rights Reserved. Instant Broadband is a registered trade- mark of Linksys. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors.

LIMITED WARRANTY Linksys guarantees that every Instant Broadband EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch will be free from physical defects in material and workmanship for one year from the date of purchase, when used within the limits set forth in the Specifications chapter of this User Guide. If the product proves defective during this war- ranty period, call Linksys Technical Support in order to obtain a Return Authorization Number. BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE FROM THE PRODUCT'S PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CAN- NOT BE PROCESSED WITHOUT PROOF OF PURCHASE. When returning a product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. All customers located outside of the United States of America and Canada shall be held responsible for shipping and handling charges.

IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID FOR THE PROD- UCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM- AGES RESULTING FROM THE USE OF THE PRODUCT, ITS ACCOMPANYING SOFT- WARE, OR ITS DOCUMENTATION. LINKSYS OFFERS NO REFUNDS FOR ITS PROD- UCTS. Linksys makes no warranty or representation, expressed, implied, or statutory, with respect to its products or the contents or use of this documentation and all accom- panying software, and specifically disclaims its quality, performance, merchantability, or fitness for any particular purpose. Linksys reserves the right to revise or update its prod- ucts, software, or documentation without obligation to notify any individual or entity. Please direct all inquiries to:

Linksys P.O. Box 18558, Irvine, CA 92623.

FCC STATEMENT The Instant Broadband EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turn- ing the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna • Increase the separation between the equipment or devices • Connect the equipment to an outlet other than the receiver’s • Consult a dealer or an experienced radio/TV technician for assistance

UG-BEFSR41W-051402B BW Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Table of Contents

Chapter 1: Introduction 1 Log 30 Linksys Cable/DSL Wireless-Ready Router 1 Help 31 Features 1 UPnP 32 Package Contents 2 Filters 33 Minimum Requirements 2 35 Dynamic 39 Chapter 2: Getting to Know the Cable/DSL Static Routing 40 Wireless-Ready Router 3 DMZ Host 41 The Cable/DSL Wireless-Ready Router’s Rear Panel 3 MAC Address Cloning 43 The Wireless PC Card (not included) 4 The Reset Button 4 Appendix A: Troubleshooting 44 The Cable/DSL Wireless-Ready Router’s Front Panel LEDs 5 Common Problems and Solutions 45 Frequently Asked Questions 46 Chapter 3: Connecting the Cable/DSL Wireless-Ready Router to Your Network 7 Appendix B: How to Obtain Your ISP’s E-mail Overview 7 & Web Addresses 50 About Static & Dynamic IP Addresses 7 Connecting Your Hardware Together & Booting Up 8 Appendix C: Installing the TCP/IP Protocol 53 Configuring Your PCs to Connect to the Cable/DSL Wireless-Ready Router 10 Appendix D: Twisted-Pair Cabling 55 Crimping Your Own Network Cables 56 Chapter 4: Adding Wireless Capabilities to Appendix E: Glossary 57 Your Router 12 Appendix F: Specifications 63 Chapter 5: Configuring Your Network with the Environmental 64 Cable/DSL Wireless-Ready Router 16 Configuring the Cable/DSL Wireless-Ready Router 16 Appendix G: Warranty Information 65 Appendix H: Contact Information 66 Chapter 6: The Cable/DSL Wireless-Ready Router’s Web-based Utility 20 Quick and Easy Administration 20 Setup 21 Setting WEP Encryption 24 Password 26 Status 27 DHCP 29 EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Chapter 1: Introduction The Linksys Cable/DSL Wireless-Ready Router

Congratulations on your purchase of an EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch. The EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch provides the ideal solution for connecting your network to a high- speed broadband connection and a 10/100 Fast backbone, with the option to add wireless capabilities. Configurable as a DHCP for your exist- ing network, the Router acts as the only externally recognized Internet gateway on your (LAN) and serves as an Internet NAT against unwanted outside intruders. Plus, the Router functions as an Access Point when you add a PC card (not included) to enable wireless connectivity. A typical router relies on a separate hub or a switch to share its Internet connection, but the Linksys EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch channels this connection through the blazing, full duplex speed of its built-in EtherFast® 10/100 4-Port Switch. This cutting-edge combination of wireless-ready router and switch technology eliminates the need to buy an additional hub or switch—just add a Wireless Network PC card to connect the router to your wireless network. Now your entire wireless network can enjoy blazing broadband Internet connections supported by its robust switched backbone. With the dual-function speed and power of the EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch, your network will take off at speeds faster than you ever imagined possible.

Features

• Expandable to Support Wireless Networking • Compatible with Universal Plug and Play (UPnP) • MAC Address Filtering • Configurable through Your Networked PC’s Web Browser • Supports IPSec and PPTP Pass-Through • Internal 4-Port Switch Dramatically Speeds Up Your Gaming • Able to Act as a DHCP Server for Your Existing Network • Wireless Capabilities Available with Use of Optional WPC11 (sold separately) • Connects to a Broadband , a 10/100 Ethernet Backbone, or a Wireless Network • Interoperable with IEEE 802.11b (DSSS) 2.4GHz-Compliant Equipment • Provides Roaming, Best Access Point Selection, Load Balancing, and Network Traffic Filtering • Long Operating Range Supports up to 91m (Indoors) and up to 457m (Outdoors) • Capable of up to 128-Bit WEP Encryption • Free Technical Support—24 Hours a Day, 7 Days a Week, Toll-Free US Calls • 1-Year Limited Warranty

1 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Chapter 2: Getting to Know the Cable/DSL Wireless-Ready Router

The Cable/DSL Wireless-Ready Router’s Rear Panel

The back panel of the Router is where all of the Router’s connections are made.

Figure 1-1

Package Contents

• One Linksys EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch (1) Figure 2-1 • One Power Adapter (2) • One TechHelper CD-ROM (3) WA N The WAN (Wide Area Network) Port is where you • One User Guide (4) will connect your cable or DSL modem. • Quick Installation (not shown) • One Registration Card (not shown) Ports 1-4 These four LAN (Local Area Network) ports are where you will connect networked devices, such as Minimum Requirements PCs, print servers, and any other Ethernet devices you want to put on your network. These ports will • Network Adapter with Ethernet (UTP CAT 5) Cabling and TCP/IP Protocol auto-detect the use of crossover or straight RJ-45 Installed per PC cables. • Internet Explorer 4.0 or Netscape Navigator 4.7 or Higher for Web-Based Configuration Power The Power Port is where you will connect the • Cable or DSL Modem with Ethernet Connection and Internet Access included AC Power adapter. • CD-ROM Drive • WPC11 for Wireless Connection (sold separately) PCMCIA Slot This is where you can connect the optional wireless PC card (not included) for wireless features.

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The Wireless-PC Card The Cable/DSL Wireless-Ready Router’s Front Panel LEDs

The Wireless PC Card (not included) To add wireless capabilities, a WPC11 (sold separately) is required. Power off the Router. Insert the WPC11 in the manner shown above in the warning label. Push the WPC11 into the BEFSR41W until it Figure 2-3 is securely held in place by the PCMCIA Slot.

Diag Red. The Diag LED illuminates when the Router goes through its self-diagnosis mode during boot-up and restart. It will turn off upon successful completion of the diagnosis. If this LED stays on for an abnormally long period of time, refer to the Troubleshooting section. During firmware upgrades, this will also flash.

Power Green. The Power LED illuminates when the Router is pow- ered on.

Full/Col Green. The Full/Col LED also serves two purposes. If this LED is continuously illuminated, the connection made Figure 2-2 through the corresponding port is successfully running in Full Duplex mode. If the LED is flickering, the connection is The Reset Button experiencing collisions. Infrequent collisions are normal. If The Reset Button this LED is flickering too often, there may be a problem with your connection. Check the Troubleshooting section if you think there is a problem. To use the Reset button: Link/Act Green. The Link/Act LED serves two purposes. If the LED Unplug the power adapter from the Router. Then, plug the power is continuously illuminated, the Router is successfully con- adapter back into the Router. Press the Reset button. The Diag LED will flash nected to a device through the corresponding port (1, 2, 3 or after three seconds. 4). If the LED is flickering, the Router is actively sending or To restore the factory default settings, Unplug the power adapter from the receiving data over that port. Router. Press the Reset button and hold for three seconds while plugging the power adapter back into the Router. 100 Orange. The 100 LED illuminates when a successful 100Mbps connection is made through the corresponding port.

4 5 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

WLAN Green. The WLAN LED illuminates when a wireless net- Chapter 3: Connecting the work is active. Cable/DSL Wireless-Ready WA N Green. The WAN LED illuminates when a successful con- nection is made between the Router and your Broadband device or network. When blinking, the Router is sending or Router to Your Network receiving data over the broadband port. Overview

Unlike a simple hub or switch, the setup of the Cable/DSL Wireless-Ready Router consists of more than simply plugging everything together. Because the Router acts as a DHCP server, you will have to set some values within the Router, and also configure your networked PCs to accept the IP Addresses the Router chooses to assign them.

You will need the following values from your ISP in order to install the Cable/DSL Wireless-Ready Router:

• PPPoE with username and password (for some DSL users) • Your broadband-configured PC’s static Internet IP Address (if applicable) • Your broadband-configured PC’s Name and Workgroup Name • Your Subnet Mask • Your Default Gateway • Your Primary DNS IP address

If your broadband access installer did not leave you this information, call your ISP and they will be able to supply you with it.

AboutAbout StaticStatic && Dynamic Dynamic IPIP Addresses Addresses

Static IP Addresses A static IP address is an IP address permanently assigned to a computer in a TCP/IP network. Static IP addresses are usually assigned to networked devices that are consistently accessed by multiple users, such as server PCs, or a print server. If you are using your Router to share your cable or DSL Internet connection, contact your ISP to see if they have assigned your home a static IP address. You will need that address during your Router’s con- figuration.

6 7 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Dynamic IP Addresses A dynamic IP address is an IP address that is automati- 6. To use the Reset button: While holding down the Reset button, unplug the cally assigned to a client station (computer, printer, etc.) in a TCP/IP network. power adapter from the Router. Wait three seconds while continuing to hold Dynamic IP addresses are typically assigned by a DHCP server, which can be down the Reset button. Then plug the power adapter back into the Router. a computer on the network or another piece of hardware, such as the Router. A The Diag LED will flash twice. During the second flash, release the Reset dynamic IP address might change every time your computer connects to the button. This will restore all the defaults. network. 7. Power on your PC. DHCP (Dynamic Host Configuration Protocol) DHCP is software that automati- cally assigns IP addresses to client stations logging on to a TCP/IP network. DHCP eliminates having to manually assign permanent IP addresses to every The Hardware Installation is complete. Continue to the next page to con- device on your network. DHCP software typically runs in servers and is also figure your PCs and Router. found in network devices such as Routers. N ote: Some ISPs—most notably some cable providers—configure Connecting Your Hardware Together and Booting Up their networks so that you do not have to enter a full Internet address into your web browser or e-mail application to reach your Once you are sure that you have the above values on hand, you can begin the home page or receive your e-mail. If your Internet home page installation and setup of your Cable/DSL Wireless-Ready Router. “www.linksys.com”,address or isyour something e-mail server’s very simple, address such is assomething “www”, rathersimilar than to “e- mail” or “pop3”, rather than “pop.mail.linksys.com”, you won’t be able to prop- erly configure your Router until you determine the actual Internet addresses of 1. Power everything down, including your PCs, your Cable or DSL modem and your Web and e-mail connections. the Router. You m ust obtain this information prior to connecting the Router to your network. 2. Connect a Network cable from one of your PCs’ Ethernet ports to one of the You can obtain this information by contacting your ISP, or you can turn to the section of the Appendix on LAN Ports on the back of the Router. Do the same with all the PCs you wish to connect to the Router. How t o Obt ain Yo ur ISP 3. Connect the network cable from your Cable or DSL modem to the WAN port ’s E-mm ail & W Web A on the back of the Router. Addre sses. 4. Connect the power-adapter cable to the Power port on the back of the Router, then plug the other end into a power outlet.

• The Power LED will illuminate green as soon as the power adapter is connected. • The Diag LED will illuminate red for a few seconds while the Router goes through its internal diagnostic test. The LED will turn off when the self-test is complete.

5. Power on the Cable or DSL modem. Verify that the power is on by checking the WAN LED on the front of the Router. The Link LED will illuminate if the power is on and the modem is ready.

8 9 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Configuring Your PCs to Connect to the Cable/DSL 4. Click the Properties button, and then choose the IP Address tab. Select Wireless-Ready Router Obtain an IP address automatically. (See Figure 3-2.) Click on the Gateway tab and make sure that all fields there are empty. Click OK. Now that your Router is physically installed, you will have to configure your PCs to accept the IP addresses that your Router will provide. If using the default Windows TCP/IP network configuration, no changes are required; just restart your PC so it will obtain an IP address from the Cable/DSL Wireless- Ready Router. These instructions apply only to Windows 95, 98 and Millennium machines. For TCP/IP setup under Windows NT, Windows 2000, or Windows XP, please refer to your docu- mentation. 1. Click the Start button, select Settings, then .

2. Double-click the Network icon.

3. In the Configuration window, select the TCP/IP protocol line that has been associated with your network card/adapter. (See Figure 3-1.)

Note: If the TCP/IP protocol is not config- ured on your PC, go to the Appendix for TCP/IP installa- Figure 3-2 tion instructions now. 5. The Network Properties window will reappear. Click OK. All client settings are complete. Windows may ask for original Windows installation files, which can be found on your Windows CD-ROM (i.e.: D:\win98, D:\win95, D:\ win9x - where “D” is the letter of your CD-ROM drive) or possibly on your hard drive (c:\windows\options\cabs.)

6. Windows will ask you to restart your PC. Click Ye s .

Repeat steps 1-6 for each PC on your network. When all PCs are config- ured, continue on to set up the Router using the Router’s Web-based Figure 3-1 Utility.

10 11 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

3. Configure the wireless functions of the web utility using the following Chapter 4: Adding Wireless instructions. (Refer to Chapter 6 for more information.) Capabilities to Your Router A. Access the web utility by opening your web browser and typing http://192.168.1.1 in the browser’s Address box. (This number is the Now that your Cable/DSL Wireless-Ready Router is wired into your network, default IP address of your Router.) Press Enter. (See Figure 4-2.) you can make your Router wireless. You can also wait until a later time. You will need a WPC11 Wireless PC Card (sold separately.)

1. Power off the Router. Figure 4-2 Make sure to insert the WPC11 Wireless PC Card in the direction shown in the warning label below. B. After entering the address into the web browser, a password request page will pop up. (See Figure 4-3.) Leave the User Name field empty, but type admin into the Password field. 2. Locate the PCMCIA slot on the back of the Router. Insert the Wireless PC Card into the PCMCIA slot in the direction shown in Figure 4-1. It is very important to install it with the LEDs facing up and in the correct direction or damage to the Router can occur. Push the Wireless PC Card into the slot until it is securely in place.

Figure 4-3

C. The basic Setup screen is the first screen you will see when you access the utility, but is the only one you need to set up your Wireless PC Card. (See Figure 4-4.) If you have already installed and set up your router, you have already seen this screen and have already properly configured all of the screen’s values. More detailed explanations and instructions can be found by clicking the page’s Help button. To clear any values you’ve entered, click Cancel and re-enter the information. To apply any set- tings that you have changed, click the Apply button. Once all settings are correct, click Continue. Figure 4-1 Setup

12 13 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

• Access Control Provides access to your network for other PCs. You’ll need to enter the MAC Address, then click on Add for any PC that you want to add. Click on Apply when finished.

• Channel Select the appropriate channel from the list provided to corre- spond with your network settings, between 1 and 11. All points in your Note: The wireless network must use the same channel in order to function correctly. Setup page Verify that the correct channel is selected. shown in this graphic may differ from • WEP (Mandatory/Disable). In order to utilize WEP encryption, select yours. Mandatory. If you do not wish do utilize WEP encryption, make sure Disable is selected. See the Section on Setting WEP Encryption for more information.

• WEP Key Setting When WEP Encryption is Enabled, press this button to modify the WEP Key Settings. See the Section on Setting WEP Encryption for more information.

If you haven’t done so already, to apply any settings that you have changed, click the Apply button. Once all settings are correct, click Continue.

Figure 4-4

The following section will provide information on setting up your wireless connection once you have the Wireless PC Card.

• ESSID The ESSID is the unique name that is shared among all points in a wireless network. The ESSID must be identical for all points in the network. It is case sensitive and must not exceed 32 characters. Make sure that all points in the network are the same. Verify that you are using the correct ESSID.

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2. A username and password prompt will appear. Leave the User Name box Chapter 5: Configuring Your empty and type admin (the default password) in the Password box. Click Network with the Cable/DSL OK. (See Figure 5-2.) Wireless-Ready Router Configuring the Cable/DSL Wireless-Ready Router

Now that your Cable/DSL Wireless-Ready Router is wired into your network, you can begin configuring your system.

Note:If your Windows system supports UPnP, Windows will offer to create a desktop shortcut to the Router. Click OK to create the desktop icon, then dou- Figure 5-2 ble-click on the icon to connect to the Router. Otherwise, connect to the Router manually, as follows. 3. The Cable/DSL Wireless-Ready Router’s Setup page will appear. (See Figure 5-3.) 1. Open your web browser and type http://192.168.1.1 in the browser’s Address box. (See Figure 5-1.) This number is the default IP address of your Router. Press Enter.

Note: The Setup page Figure 5-1 shown in this graphic may differ from yours. N ote: If you have previously enabled an Internet Sharing Proxy Service on any of your PCs, you must disable it now.

• If you are running Netscape Navigator: Click Advan • If you areced running>> Internet Explorer v5 or better, click Pro xies> and click Set tings>> D Edit L Co irect C >> P AN Se ntrol P onne refere ttings anel>> ction t nce >> continue. . Remove the checksInte from all three boxes.to the Click rnet O Intern ption Star et. s>> C t>> onnec tions>> OK to Figure 5-3

16 17 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

4. Configure the following values. 1. Click on the button next to PPPoE. Note: All of this information should be readily available from your ISP. 2. Enter the User Name you use to log on to your Internet connection. 3. Enter your corresponding Password. Host Name & Domain Name These fields allow you to supply a host and domain name for the Router. Some ISPs require these names as identifi- RAS (Remote Access Service) is a service used in Singapore only. If you are cation. You may have to check with your ISP to see if your Broadband using a RAS connection, check with your ISP for the necessary setup infor- Internet service has been configured with a host and domain name. In most mation.To enable RAS: cases, leaving these fields blank will work. 1. Click on the button next to RAS. LAN IP Address These values refer to your internal network settings. 2. Enter the User Name you use to log on to your Internet connection. Unless you have specific internal needs, there should be no reason to 3. Enter your corresponding Password. change these values. For the internal LAN, the default values are as fol- lows. RAS Plan Select the type of plan you have. • Private IP Address: 192.168.1.1 • Subnet Mask: 255.255.255.0 Connect on Demand (Only available if PPPoE is enabled) If you aren’t actively using the Internet, you can configure your Router to cut your con- Wireless In this section, enter the ESSID and Channel for your wireless net- nection with your ISP after a certain period of time. If you have been dis- work. You can provide access to your network for other PCs with Access connected due to inactivity, Connect on Demand enables your Router to Control. You’ll need to enter the MAC Address, then click on Add for any automatically re-establish your connection as soon as you attempt to access PC that you want to add. Click on Apply when finished. You can decide the Internet again. Click on the button next to Connect on Demand to whether or not to use WEP Encryption and configure the level of WEP Enable the option. Encryption. WEP Encryption is not necessary for the operation of your Router. For more information, see the section of this guide called Setting Keep Alive Option This option keeps your PPPoE-enabled Internet access WEP Encryption. You must use a wireless PC card (sold separately) to connected indefinitely, even when it sits idle. It keeps the connection alive use this and any other wireless feature. by sending out a few data packets periodically, so your Internet service thinks that the connection is still active. To use this option, click on the but- WAN IP Address These values refer to the outside network you connect to ton next to Keep Alive to select it. every time you access your Broadband Internet connection. Most Broadband ISPs assign their clients a different IP address each time they 5. When you have properly configured the Setup page, click Apply, and then log on. If this is the case with your ISP, click Obtain an IP Address click Continue. Automatically and continue to step 5. If your ISP assigns you a fixed IP address, click Specify an IP Address and enter the address into the 6. Reset the power on the cable or DSL modem, and then restart the com- Subnet Mask, Default Gateway Address, and DNS fields provided by the puter so the computer can obtain the new Router information. ISP. Your Cable/DSL Wireless-Ready Router is now configured to your net- Login This section is used if you are using a dial-up style connection like work. If you would like, you may continue on to learn more about the PPPoE or RAS. Router’s Web-based Utility.

PPPoE (Point-to-Point Protocol over Ethernet) is used by DSL-based ISPs to establish communications with an end-user. If you are using a DSL Note: Make sure that a Network Card or adapter has been line, check with your ISP to see if they use PPPoE. If they do use PPPoE, successfully installed into each PC you plan on configuring you must enable it by selecting PPPoE in the login section. If you do enable before you continue. PPPoE, remember to remove any existing PPPoE applications already on any of your PCs. To enable PPPoE:

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Setup Chapter 6: The Cable/DSL p Wireless-Ready Router’s Web- based Utility Quick & Easy Administration For your convenience, an administrative utility has been programmed into the chipset of your router. All router-based administrative tasks are performed through this web utility. The web utility can be accessed by any PC on the net- work by typing http://192.168.1.1 into the PC’s web browser address window. Note: The (See Figure 6-1.) Setup page shown in this graphic may differ from yours. Figure 6-1

After entering the address into the web browser, a password request page will pop up. (See Figure 6-2.) Leave the User Name field empty, but type admin into the Password field.

Figure 6-3

The basic Setup screen is the first screen you will see when you access the Utility. If you have already installed and set up your router, you have already seen this screen and have already properly configured all of the screen’s values. • Host Name This entry is necessary for some ISPs. Ask your ISP. • Domain Name This entry is necessary for some ISPs. Ask your ISP. • Firmware Version This entry shows the version of the firmware you are Figure 6-2 using. Future versions of the Router’s Firmware may become available on the Linksys website. On the following pages you will find brief descriptions and important functions • LAN IP Address and Subnet Mask The IP Address and Subnet Mask of of each utility web page. More detailed explanations and instructions can be the router as they are seen on the internal LAN. The default value is found by clicking each page’s Help button. To clear any values you’ve entered 192.168.1.1 for IP and 255.255.255.0 for Subnet Mask. Unless you already on any page, click Cancel and re-enter the information. To apply any settings know your settings, we recommend that you keep the defaults. that you have changed on any page, click the Apply button. Once all settings are correct, click Continue.

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• ESSID The ESSID is the unique name that is shared among all points in a 1. Click on the button next to PPPoE. wireless network. The ESSID must be identical for all points in the network. 2. Enter the User Name you use to log on to your Internet connection. It is case sensitive and must not exceed 32 characters. Make sure that all 3. Enter your corresponding Password. points in the network are the same. Verify that you are using the correct ESSID. RAS (Remote Access Service) is a service used in Singapore only. If you are • Access Control Provides access to your network for other PCs. You’ll need using a RAS connection, check with your ISP for the necessary setup to enter the MAC Address, then click on Add for any PC that you want to information.To enable RAS: add. Click on Apply when finished. • Channel Select the appropriate channel from the list provided to corre- 1. Click on the button next to RAS. spond with your network settings, between 1 and 11. All points in your 2. Enter the User Name you use to log on to your Internet connection. wireless network must use the same channel in order to function correctly. 3. Enter your corresponding Password. Verify that the correct channel is selected. • WEP (Mandatory/Disable). In order to utilize WEP encryption, select RAS Plan Select the type of plan you have. Mandatory. If you do not wish do utilize WEP encryption, make sure Disable is selected. Connect on Demand (Only available if PPPoE is enabled) If you aren’t • WEP Key Setting When WEP Encryption is Enabled, press this button to actively using the Internet, you can configure your Router to cut your con- modify the WEP Key Settings. See the Section on Setting WEP nection with your ISP after a certain period of time. If you have been dis- Encryption for more information. connected due to inactivity, Connect on Demand enables your Router to • WAN IP Address and Subnet Mask The IP Address and Subnet Mask of automatically re-establish your connection as soon as you attempt to access the router as seen by external users on the Internet (including your ISP). If the Internet again. Click on the button next to Connect on Demand to set to Obtain an IP Address Automatically, these values are assigned by enable the option. your ISP. • Default Gateway Address Your ISP will provide you with the Gateway IP Keep Alive Option This option keeps your PPPoE-enabled Internet access Address. If set to Obtain an IP Address Automatically, these values are connected indefinitely, even when it sits idle. It keeps the connection alive automatically assigned by your ISP. by sending out a few data packets periodically, so your Internet service • DNS (Domain Name Server) IP Address Your ISP will provide you with thinks that the connection is still active. To use this option, click on the but- at least one DNS IP Address. If set to Obtain an IP Address Automatically, ton next to Keep Alive to select it. these values are automatically assigned by your ISP.

You can test and see if the above settings are correct by successfully connect- In order for your changes to take effect, click the ing to the Internet. Apply button. Login This section is used if you are using a dial-up style connection like Password PPPoE or RAS.

PPPoE (Point-to-Point Protocol over Ethernet) is used by DSL-based ISPs to establish communications with an end-user. If you are using a DSL line, check with your ISP to see if they use PPPoE. If they do use PPPoE, you must enable it by selecting PPPoE in the login section. If you do enable PPPoE, remember to remove any existing PPPoE applications already on any of your PCs. To enable PPPoE:

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Setting WEP Encryption 3. The following screen will appear, verifying that you are enabling WEP Encryption. Press the OK button to continue. (See Figure 6-4.) Note: WEP Encryption is an additional data security measure that is not essential for Router operation, but is strongly recommended.

WEP (Wired Equivalent Privacy) Encryption is a method of encrypting data that is transmitted over your wireless network to ensure data security. In a wired network, data security is maintained through the physical wire. WEP Encryption provides the same level of security for your wireless data as if it were being transmitted over standard network cabling (which is how the name Figure 6-4 is derived). In order to duplicate wired network security levels, wireless data 4. The following screen will appear, where you will choose your WEP is encrypted at its point of transmission. It is decoded by the receiving device. Encryption settings. For the Authentication Type, select Open System This allows users to have the same amount of security over their wireless net- (default setting).(See Figure 6-5.) work as they would over a wired network. This level of security is above that already provided by the use of password protection by your network .

The present standard for this encryption, set by the IEEE (the Institute of Electrical and Electronics Engineers), is defined as 40-bit (sometimes also Note: The called 64-bit) encryption. Some vendors, including Linksys, offer the higher screen 128-bit encryption. These numbers refer to the complexity of the algorithms shown in generated in order to code and decode the data transmitted. The higher the bit this graphic number, the greater the complexity of the algorithm, which is designed to pro- may differ vide increasingly secure encryption. Be aware, however, that higher levels of from yours. encryption often negatively affect network data transmission rates. This encryption is not necessary for the operation of your wireless network device, but is strongly recommended. Your need for security can only be determined by you. If your security needs are such that ordinary password pro- tection is sufficient, you may decide not to use the additional WEP Encryption. However, should your security needs dictate it, the Cable/DSL Wireless-Ready Figure 6-5 Router can provide as secure a connection as is available in wireless network- ing. 5. For the Encryption, choose 64 Bit Encryption or 128 Bit Encryption. The 1. At the Setup Screen, if you choose to enable WEP Encryption, select one you choose must also be used on all your other network devices. Enter Mandatory under the WEP section. Hexadecimal characters, which are the letters “A” through “F” and the num- bers “0” through “9” into the fields provided. If you have set a WEP 2. Press the WEP Key Setting button to set the WEP Encryption type and Encryption on a wireless device on your network, then you must use the level. same key set. All devices on a network must use the same key set.

6. Click the Save button, then the Close button and the encryption portion of the setup is now complete.

24 25 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Password Status

This tab displays the current status of the Router; it reflects data and selections that you have entered under the setup tab.

Figure 6-6

It is strongly recommended that you set a password for the router. When you first power up the router, you will notice that the Password setting default is Figure 6-7 admin.For security, we recommend that you change your password often. All of the information provided on this screen is read-only. To make changes, To change your password, enter your new password in the Router Password select the Setup tab. box. Enter it again in the box just below the Router Password box, exactly as • Host Name This field shows the name of your Router. This entry is neces- you typed it in the first box. When you are sure you have entered the password sary for some ISPs. as you want it, press the Apply button. • Firmware Version This field shows the installed version of the firmware. • Login This field shows whether you have enabled the use of the Router’s PPPoE support and the status. • LAN These fields display the current IP Address and Subnet Mask of the Router, as seen by users on your internal network. If you set the Restore Factory Default option and click Apply, •WANThese fields display the WAN IP Address, WAN Subnet Mask, and you will clear all of the Router’s settings. Do not restore to WAN Default Gateway IP address of the Router, as seen by external users on the factory defaults unless you want to completely set up the the Internet. Router again. Once the Router is reset, you will have to re- • DNS () IP Address These fields show the IP enter your configuration. Address(es) of the DNS currently used by the Router. Multiple DNS IP set- tings are common. In most cases, the first available DNS entry is used.

26 27 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

• DHCP Release Click the DHCP Release button to release the WAN IP DHCP address from the Router. • DHCP Renew Click the DHCP Renew button to get the new WAN IP A DHCP (Dynamic Host Configuration Protocol) Server automatically assigns address from your ISP. IP addresses to each computer on your network. Unless you already have one, • DHCP Clients Table Click on the Clients Table button to show the current it is highly recommended that your router be set up as a DHCP server. DHCP Client information. (This information is stored in temporary memo- ry, so the list of clients could disappear.) DHCP

Figure 6-8 • DHCP Server Check the Enable option to enable the DHCP server option of the router. If you already have a DHCP server on your network, set the router’s DHCP option to Disable. • Starting IP Address Enter a numerical value for the DHCP server to start with when issuing IP addresses. • Number of DHCP Users Enter the maximum number of PCs that you want the DHCP server to assign IP addresses to, with the absolute maximum being 253. • DHCP Clients Table Click on the Clients Table button to show the cur- rent DHCP Client information. (This information is stored in temporary memory, so the list of clients could disappear.) Help Help

28 29 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Log Help Under the Help tab, you’ll find links to all of the Router’s internal support doc- This tab shows the status of Logging on the Router. If you enable logging, the umentation, including the application that upgrades the Router’s firmware. Router will keep a record of all sites on the Internet (i.e., e-mail, ftp sites, etc.) that have been accessed through the Router.

Figure 6-10

New firmware versions are posted at www.linksys.com and can be downloaded for free. If the Router can access the Internet already, there’s no need to down- load a newer firmware version, unless that version has a new feature that you Figure 6-9 want to use. Loading new firmware onto the Router might not enhance the speed or the quality of your connection speed. • Incoming/Outgoing Access Logs: Here you will specify whether you want to make a record of Internet sites that have been accessed through the Router. Both outgoing or incoming addresses can be recorded. (For instance, if you have a web server, you can keep a record of the sites from which your web server has been accessed.)

• E-Mail Logs: Select Send Incoming Log or Send Outgoing Log. Enter the Email address and Subject for the log. Add the IP Address of the SMTP E-Mail Server and the Port Number.

• E-Mail Schedule: Choose to send the log When log is full or enter a spe- cific time. Select the Timezone in the drop-down menu.

• Click the Apply button to save any changes.

30 31 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

UPnP Filters

This screen shows the Universal Plug and Play services that are available. Filters block specific internal users from accessing the Internet. You can set up a filter through an IP address or a network port number.

Filtered Private IP Range • To set up a filter using IP addresses, enter the range of IP addresses you wish to filter in the IP address fields. Users who have filtered IP addresses will not be able to access the Internet at all. If you only want to filter one IP address instead of a range of IP addresses, enter the same value into both fields.

Filtered Private Port Range Figure 6-11 • To filter users by network port Figure 6-12 number, enter a network port Microsoft ME and XP feature Universal Plug and Play (UPnP), which allows number or a range of network ports. Select the protocol for each port number you automatic discovery and configuration of equipment attached to the LAN. want to filter, TCP or UDP. Enter the port numbers you want to filter in the port UPnP allows enabled applications to automatically manage the router. numbers fields. Users connected to the Router will no longer be able to access any port number listed there. There are two ways to begin the UPnP configuration. Choose one: Editing MAC Filter Setting • Double-click My Network Place. Then double-click the Linksys BEFSR41W icon. • This feature filters the network adapter’s specific MAC address from going out to • Or, start your Web interface. Type in the address http://192.168.1.1. the Internet.

Using either method, you will see the Setup tab. Click the Advanced tab. Then • To check your network adapter’s MAC address, run “winipcfg” or “ipconfig” in click the UPnP tab. the command prompt. To set the MAC filter, click the Edit MAC Filter Setting button. When a second window appears, select the range in the drop-down box, On the UPnP tab, you have three features to choose from: and at the MAC number prompt, enter the 12-digit MAC address you want to fil- ter. Click the Apply button and then the Continue button before closing the win- • Enable UPnP Services This allows Windows XP to activate the UPnP fea- dow. ture for automatic configuration. Block WAN Request • Allow users to make configuration changes through UPnP This allows you to make manual changes while still using the UPnP feature. • By enabling the Block WAN Request feature, you can prevent your network from • Allow users to disable Internet access This allows you to prohibit any and being pinged or detected by other Internet users. The Block WAN Request feature all Internet connections. also adds another measure of security to your network by hiding your network ports. Both functions of the Block WAN Request feature make it more difficult for Click Apply to accept changes, or click Cancel to cancel changes. outside users to work their way into your network. 32 33 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Port Forwarding Port • Click on Apply to save any changes.

Using IPSec Pass Through

• This feature lets you use IPSec Pass Through. To use this feature, click on Enable next to “IPSec Pass Through,” then click on Apply.

• To disable IPSec Pass Through, click on Disable, and then click on Apply.

Using PPTP Pass Through

• Point-to-Point Tunneling Protocol is the method used to enable VPN (Virtual Private Network) sessions. To enable this feature, click on For Enable next to PPTP Pass Through, then click Apply.

• To disable this feature, click on Disable next to PPTP Pass Through, then click on Apply.

Using L2TP Pass Through

• This feature lets you use L2TP Pass Through. To use this feature, click on Enable next to “L2TP Pass Through,” and then click on Apply.

• To disable L2TP Pass Through, click on Disable, and then click on Apply.

Using Remote Management

• This feature allows you to manage your Router from a remote location, via the Figure 6-13 Internet. To enable this feature, click on Enable, and enter the desired port num- ber from 1025 to 65535 (By default it is set to 8080). Then click on Apply. This screen displays preset application settings as well as options for cus- tomization of port services for other applications. Using remote management is easy. Once you have enabled remote management, enter http://:8080 or the Port Number you have defined, The Preset Applications are among the most widely used Internet applications. into the browser of any PC on the network. Press the Enter key. You will then be They include the following: able to alter the Router configuration settings. • FTP (File Transfer Protocol) A protocol used to transfer files over a TCP/IP • To disable Remote Management, click on Disable, then click on Apply. network (Internet, UNIX, etc.). For example, after developing the HTML pages for a Web site on a local machine, they are typically uploaded to the Using Default MTU (Maximum Transmission Unit) Web server using FTP. FTP includes functions to log on to the network, list • This feature allows you to specify the largest packet size permitted for network directories, and copy files. FTP operations can be performed by typing com- transmission. Select Enable and enter the value desired. It is recommended that mands at a command prompt or via an FTP utility running under a graphical you leave this value within the 1200 to 1500 range. Most DSL users should use interface such as Windows. FTP transfers can also be initiated from within a 1492. When this function is disabled, the MTU is set at a default value of 1500. Web browser by entering the URL preceded with ftp://.

34 35 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

• Telnet A terminal emulation protocol commonly used on the Internet and To add a customized application in the UPnP Forwarding screen: TCP/IP-based networks. It allows a user at a terminal or computer to log on to a remote device and run a program. 1. Enter the name of the application in the appropriate Customized • SMTP (Simple Mail Transfer Protocol) The standard e-mail protocol on the Applications field. Continue with the fields on the same line. Internet. It is a TCP/IP protocol that defines the message format and the message transfer agent (MTA), which stores and forwards the mail. 2. In the Ext. Port field, enter the number of the external port used by the • DNS (Domain Name System) The way that Internet domain names are server. located and translated into IP addresses. A domain name is a meaningful and easy-to-remember “handle” for an Internet address. 3. Check Protocol TCP or Protocol UDP, depending on which protocol you • TFTP (Trivial File Transfer Protocol) A version of the TCP/IP FTP proto- use. col that has no directory or password capability. • Finger A UNIX command widely used on the Internet to find out informa- 4. Enter the number of the internal port. tion about a particular user, such as telephone number, whether currently logged on or the last time logged on. The person being “fingered” must have 5. Enter the IP address of the server that you want the Internet users to access. placed his or her profile on the system. Fingering requires entering the full Refer to your software documentation for more information about chang- user@domain address. ing service port settings, if necessary. • HTTP (HyperText Transport Protocol) The communications protocol used to connect to servers on the World Wide Web. Its primary function is to 6. Now, check the Enable box or the changes that you made to UPnP establish a connection with a Web server and transmit HTML pages to the Forwarding will not function. client browser. • POP3 (Post Office Protocol 3) A standard mail server commonly used on Port Range Forwarding the Internet. It provides a message store that holds incoming e-mail until users log on and download it. POP3 is a simple system with little selectivity. Forwarding is generally used to set up a web server, ftp server, or e-mail serv- All pending messages and attachments are downloaded at the same time. er on your network. The router’s DHCP function must be disabled to use POP3 uses the SMTP messaging protocol. Forwarding. • NNTP (Network News Transfer Protocol) The protocol used to connect to Usenet groups on the Internet. Usenet newsreaders support the NNTP pro- Click the View Port Range Forwarding button to open the Port Range tocol. Forwarding screen. (See Figure 6-14.) Port forwarding sets up public services • SNMP (Simple Network Management Protocol) A widely used network on your network. When users from the Internet make certain requests of your monitoring and control protocol. Data is passed from SNMP agents, which network, the router will forward those requests to the appropriate computer. are hardware and/or software processes reporting activity in each network device (hub, router, bridge, etc.) to the workstation console used to oversee the network. The agents return information contained in a MIB (Management Information Base), which is a data structure that defines what is obtainable from the device and what can be controlled (turned off, on, etc.).

You must check the Enable box to enable the applications you have defined.

36 37 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Dynamic Routing

Figure 6-15

With Dynamic Routing you can automatically adjust to physical changes in the network’s layout. Using RIP protocol, the router determines the route of the network packets based on the fewest number of hops between the source and the destination. The RIP protocol regularly broadcasts routing information to Figure 6-14 other routers on the network. To set up Dynamic Routing:

To add a server using Port Range Forwarding: 1. Choose the correct working mode. Use Gateway Mode if your Router is hosting your network’s connection to the Internet. Use Router Mode if the 1. Enter the name of the application in the appropriate Customized router exists on a network with other routers. Applications field. Continue with the fields on the same line. 2. In the TX field, choose the protocol by which you transmit data on the net- 2. In the Ext. Port field, enter the number of the external port used by the work. server. 3. In the RX field, choose the protocol by which you receive data on the net- work. 3. Check Protocol TCP or Protocol UDP, depending on which protocol you use. 4. Click the Apply button to save your changes. 4. Enter the IP address of the server that you want the Internet users to access. Refer to your software documentation for more information about chang- ing service port settings, if necessary.

5. Now, check the Enable box or the changes that you made to Port Range Forwarding will not function.

38 39 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Static Routing Subnet Mask The Subnet Mask (also known as the Network Mask) deter- mines which portion of an IP address is the network portion, and which portion is the host portion. In the example above, the Network Mask is 255.255.255.0. This determines (by using the values 255) that the first three numbers of a network IP address identify this particular network, while the last digit (from 1 to 254) would identify the specific host.

Default Gateway IP This IP address should be the IP address of the gateway device that allows for contact between the Router and the remote network or host.

Hop Count This value gives the number of nodes that a data packet passes through before reaching its destination. A is any device on the network, such as switches, PCs, etc.

Figure 6-16 Interface This interface tells you whether your network is on the internal LAN or the WAN, or the external Internet. If you are connecting to a sub- If your Router is connected to more than one network, it may be necessary to network, select LAN. If you’re connecting to another network through the set up a static route between them. A static route is a pre-determined pathway Internet, select WAN. that network information must travel to reach a specific host or network. Click the Show Routing Table button to view the current static routing configura- 3. Click the Apply button to save your changes. tion.

To create a static route entry:

1. Select Static Route Entry from the drop down list. The Cable/DSL Router supports up to 20 static route entries.

2. Enter the following data to create a new static route:

Destination LAN IP The Destination LAN IP is the address of the remote network or host to which you want to assign a static route. Enter the IP address of the host for which you wish to create a static route here. If you are building a route to an entire network, be sure that the network portion of the IP address is set to zero (0). For example, the Router’s standard IP address is 192.168.1.1. Based on this address, the address of the network to which the Router is connected is 192.168.1, with the last digit (1, in this case) determining the Router’s place on the network. Therefore you would enter the IP address 192.168.1.0 if you want to route to the Router’s entire network, rather than just to the Router.

40 41 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

DMZ Host MAC Address Cloning

Figure 6-18

MAC Address Cloning allows you to assign the Router a MAC address, which is a 12-digit code assigned to a unique piece of hardware for identification, like Figure 6-17 a Social Security number. Some ISPs require that you register the MAC address of your network card/adapter, which was connected to your cable or The DMZ Host setting allows one local computer to be exposed to the Internet DSL modem during installation. for the use of special-purpose services such as Internet gaming or video-con- ferencing. Click on the Clone button to find your adapter’s MAC address and click OK.

To expose one computer, enter the computer’s IP address and click the Apply This clones your network adapter’s MAC address onto your Router, and pre- button. Inactivate DMZ by entering a zero (0). DMZ Host vents you from having to call your ISP to change the registered MAC address to the adapter’s MAC address. Z Host

42 43 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

3. I can’t browse through the Cable/DSL Wireless-Ready Router. Appendix A: Troubleshooting • Check if both ends of the network cable and power adapter are properly connected. Check if the status LEDs on the front panel are functioning Common Problems and Solutions properly. • If using Windows 95 or Windows 98, check the TCP/IP setup on the This section provides possible solutions to problems regarding the installation client side. Run winipcfg by clicking on the Start button, selecting Run, and operation of the Cable/DSL Wireless-Ready Router. If your situation is and typing winipcfg in the Run box. Then press Enter. The PC should described here, the problem should be solved by applying the corresponding have an IP address of 192.168.1.xxx (“xxx” is from 2 to 254.) The Subnet solution. If you can’t find an answer here, check the Linksys website at Mask is 255.255.255.0; the default gateway IP should be the Router’s IP www.linksys.com. Address, and check that the DNS is correct. • Same as above, check the same setup values on the Status Monitor page 1. I can’t connect to the Cable/DSL Wireless-Ready Router. of the Cable/DSL Wireless-Ready Router. • Ensure that the Cable/DSL Wireless-Ready Router is properly installed, 4. When I enter a URL or IP address, I get a time out error. LAN connections are OK, and it is powered ON. • Ensure that your PC and the Cable/DSL Wireless-Ready Router are on • Check if other PCs work. If they do, ensure that your workstations IP set- the same network segment. If you are not sure, initiate the DHCP func- tings are correct (IP address, Subnet Mask, Default gateway and DNS) tion, and let the PC get the IP address automatically. • If the PCs are configured correctly, but still not working, check the • Ensure that your PC is using an IP address within the default range of Cable/DSL Wireless-Ready Router. Ensure that it is connected and ON. 192.168.1.2 to 192.168.1.254 and thus compatible with the Cable/DSL Connect to it and check its settings. (If you cannot connect to it, check Wireless-Ready Router default IP Address of 192.168.1.1 the LAN and power connections.) • Also, the Subnet Mask should be set to 255.255.255.0 to match the • If the Cable/DSL Wireless-Ready Router is configured correctly, check Cable/DSL Wireless-Ready Router. For the Cable/DSL Wireless-Ready your Internet connection (DSL/Cable modem, etc.) to see that it is work- Router, you can check these settings by going to the Start Menu. Click ing correctly. on Settings, then Control Panel, then double-click on Network, to • Manually configure the TCP/IP with a DNS address provided by your check the Properties for the TCP/IP protocol. ISP.

2. The Diag LED stays lit when it shouldn’t. 5. I can’t obtain an IP address from my cable or DSL modem. • Ensure that all of your cabling is properly connected and that all of the • The Diag LED lights up when the device is first powered up. Meantime, router’s WAN and LAN LEDs are correctly illuminated. the system will boot up itself and check for proper operation. After fin- • Power down your cable or DSL modem for a few seconds. Turn it back ishing the checking procedure, the LED turns off to show the system is on. After the modem goes through its self-test, check to see if you now working fine. If the LED remains lit after this time, the device is not have an IP address. working properly. Try to re-flash the firmware by assigning a static IP • Ensure that your cable or DSL modem is DHCP-capable. address to the computer, and then upgrade the firmware again. If that • You may have to enter the router or host name in the Setup page of the doesn’t help, contact your dealer for further inspection. Router’s web-based utility. Go to the Setup section of the Web-based Utility for more information. • Your ISP may require Mac addresses. Check with your ISP. This address can be obtained in the Status screen of the Router’s Web-based Utility.

44 45 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

Frequently Asked Questions Does the Cable/DSL Wireless-Ready Router support any operating system other than Windows 95, Windows 98, Windows 2000, Windows NT, or Windows XP? What is the maximum number of IP addresses that the Cable/DSL Wireless-Ready Yes, but Linksys does not at this time provide technical support for setup, Router will support? The Router will support up to 253 IP addresses. configuration or troubleshooting of any non-Windows operating systems.

Is IPSec Pass-Thru supported by the Router? Yes, it is a built-in feature that the Does the Cable/DSL router support ICQ send file? Yes, with the following fix: router automatically enables. ICQ menu-> preference -> connections tab-> check “I am behind a firewall or proxy,” and set the firewall time-out to 80 seconds in firewall setting. The Where is the Cable/DSL Wireless-Ready Router installed on the network? In a typ- Internet user can then send a file to a user behind the router. ical environment, the Router is installed between the Cable/DSL Modem and the LAN. Plug the Cable/DSL Wireless-Ready Router into the Cable/DSL How do I get Napster to work with the Router? Napster is fully compatible with Modem’s Ethernet port. the Router, but you must make sure that, during installation, you select “no idea” when asked about your firewall selection. Set your proxy settings to Does the Cable/DSL Wireless-Ready Router support IPX or AppleTalk? No. TCP/IP “No Proxy Server” in your File>Preferences. is the only protocol standard for the Internet and has become the global stan- dard for communications. IPX, a NetWare communications protocol used I set up an Unreal Tournament Server, but others on the LAN cannot join. What do only to route messages from one node to another, and AppleTalk, a commu- I need to do? If you have a dedicated Unreal Tournament server running, you nications protocol used on Apple and Macintosh networks, can be used from need to create a static IP for each of the LAN and forward ports LAN to LAN connections, but those protocols cannot connect from WAN to 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. If LAN. you want to use the UT Server Admin, forward another port (8080 usually works well), and then in the [UWeb.WebServer] section of the server.ini file, Does the WAN connection of the Cable/DSL Wireless-Ready Router support 100Mb set the ListenPort to 8080 (to match the mapped port above) and ServerName Ethernet? Because of the speed limitations of broadband Internet connections, to the IP assigned to the router from your ISP. the Cable/DSL Router’s current hardware design supports 10Mb Ethernet on its WAN port. It does, of course, support 100Mbps over the auto-sensing Fast Can multiple gamers on the LAN get on one game server and play simultaneously Ethernet 10/100 switch on the LAN side of the router. with just one public IP address? It depends on which network game or what kind of game server you are using. For example, Unreal Tournament supports What is Network Address Translation and what is it used for? Network Address multi-login with one public IP. Translation (NAT) translates multiple IP addresses on the private LAN to one public address that is sent out to the Internet. This adds a level of security How do I get Half-Life: Team Fortress to work with the Router? The default client since the address of a PC connected to the private LAN is never transmitted port for Half-Life is 27005. The computers on your LAN need to have on the Internet. Furthermore, NAT allows the Cable/DSL Wireless-Ready “+clientport 2700x” added to the HL shortcut command line; the x would be Router to be used with low cost Internet accounts, such as DSL or cable 6, 7, 8, and on up. This lets multiple computers connect to the same server. , when only one TCP/IP address is provided by the ISP. The user may One problem: Version 1.0.1.6 won’t let multiple computers with the same CD have many private addresses behind this single address provided by the ISP. key connect at the same time, even if on the same LAN (not a problem with 1.0.1.3). As far as hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP of the server computer. There remains, however, a problem with people being booted after a few minutes with an “illegible server message.”

46 47 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

The web page hangs; downloads are corrupt, or nothing but junk characters are If DMZ is used, does the exposed user share the public IP with the Router? No. being displayed on the screen. What do I need to do? Force your NIC to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of Does the Router pass PPTP packets or actively route PPTP sessions? The router your NIC as a temporary measure. (Please look at the Network Control allows PPTP packets to pass through. Panel, in your Ethernet Adapter’s Advanced Properties tab.). Make sure that your proxy setting is disabled in the browser. Check our website at Is the Router cross-platform compatible? Any platform that supports Ethernet www.linksys.com for more information. and TCP/IP is compatible with the router.

If all else fails in the installation, what can I do? Reset the router by holding down Will the Router allow me to use my own public IPs and Domain, or do I have to use the reset button for at least three seconds and reset your cable or DSL modem the IPs provided by the Router? The router mode allows for customization of by powering the unit off and then on. Obtain and flash the latest firmware your public IPs and Domain. release that is readily available on the Linksys website, www.linksys.com. How many ports can be simultaneously forwarded? Theoretically, the router can How will I be notified of new router firmware upgrades? All Linksys firmware establish 520 sessions at the same time, but you can only forward 10 ranges upgrades are posted on the Linksys website at www.linksys.com, where they of ports. can be downloaded for free. The router's firmware can be upgraded with TFTP programs. Does the Router replace a modem? Is there a cable or DSL modem in the Router? No, this version of the router must work in conjunction with a cable or DSL Does the Cable/DSL Wireless-Ready Router support IPSec? Yes, but only pass modem. through IPSec is supported. Which modems are compatible with the Router? The router is compatible with Will the router function in a Macintosh environment? Yes, but the router’s setup virtually any cable or DSL modem that supports Ethernet. pages are accessible only through Internet Explorer v4.0 or Netscape Navigator v4.0 or higher for Macintosh. What are the advanced features of the Router? The router’s advanced features include Filters, Forwarding, Dynamic Routing, Static Routing, and DMZ With which type of firewall is the router equipped? The Cable/DSL Wireless- host. Ready Router uses NAT and TCP/IP port inspections. Does Linksys provide syslog support? No, Linksys does not currently provide Does the Router do Stateful packet inspection? No syslog support.

I am not able to get the web configuration screen for the Router. What can I do? How can I check whether I have static DHCP IP Addresses? Consult your ISP to You may have to remove the proxy settings on your Internet browser, e.g., confirm the information. Netscape Navigator or Internet Explorer. Or remove the dial-up settings on your browser. Check with your browser documentation. How do I get mIRC to work with the Router? Set port forwarding to 113 for the computer on which you are using mIRC. If you are experiencing difficulty What is DMZ? Demilitarized Zone (DMZ) allows one IP address (computer) to after setting the port forwarding, try changing the Direct Client-to-Client be exposed to the Internet. Some applications require multiple TCP/IP ports (DCC) settings to a range from 1024 to 1030 on the DCC option and to be open. It is recommended that you set your computer with a static IP if Forwarding page of the Web-based Setup Utility. you want to use DMZ. If your questions are not addressed here, refer to the contact information on the last page of this manual.

48 49 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

3. At the DOS command prompt, type ping mail. (assuming that the loca- Appendix B: How to Obtain Your tion for which you’re trying to find an IP address is configured as “mail”). Press Enter. Information such as the following data, taken from a ping of ISP’s E-mail & Web Addresses Microsoft Network’s e-mail server, will be displayed. C:\>ping mail Virtually all Internet addresses are configured with words or characters (i.e., www.linksys.com, www.yahoo.com, etc.) In actuality, however, these Internet Pinging mail [24.53.32.4] with 32 bytes of data: addresses are assigned to IP addresses, which are the true addresses on the Internet. For example, www.linksys.com is actually 216.23.162.142. Type it Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 into your web browser and you will wind up at the Linksys home page every Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 time. Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 Reply from 24.53.32.4: bytes=32 time<10ms TTL=128 IP and web addresses, however, can sometimes be long and hard to remember. Because of this, certain ISPs will shorten their server addresses to single words Ping statistics for 24.53.32.4: or codes on their users’ web browser or e-mail configurations. If your ISP’s e- Packets: Sent = 4, Received = 4, Lost = 0 (0% mail and web server addresses are configured with single words (“www,” “e- loss), mail,” “home,” “pop3,” etc.) rather than whole Internet addresses or IP address- Approximate round trip times in milli-seconds: es, your Router may have problems sending or receiving mail and accessing the Minimum = 0ms, Maximum = 0ms, Average = 0ms Internet. This happens because your Router has not been configured by your ISP to accept their abbreviated server addresses. 4. Write down the IP address returned by the ping command. (In the example above: 24.53.32.4.) This IP address is the actual IP address of the The solution is to determine the true web addresses behind your ISPs code server “mail,” or any other word or value you have pinged. words. You can determine the IP and web addresses of your ISP’s servers by “pinging” them. Step Two: Pinging for a Web Address

If you don’t have your ISP’s web and e-mail IP addresses, you While the IP address returned above would work as your e-mail server address, must either get them from your ISP or follow these steps prior it may not be permanent. IP addresses change all the time. Web addresses, how- to connecting your Router to your network. ever, usually don’t. Because of this, you’re likely to have fewer problems by configuring your system with web addresses rather than IP addresses. Follow the instructions below to find the web address assigned to the IP address that Step One: Pinging an IP Address you just pinged.

The first step to determining your ISP’s web and e-mail server address is to 1. At the DOS command prompt, type “ping -a 24.53.32.4,” where ping its IP address. 24.53.32.4 is the IP address that you just pinged. Information such as the following data will be displayed. 1. Power on the computer and the cable or DSL modem, and restore the network configuration set by your ISP if you have since changed it.

2. Click Start, then Run, and type command. This will bring up the DOS window.

50 51 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch C:\>ping -a 24.53.32.4 Appendix C: Installing the Pinging mail.msnv3.occa.home.com [24.53.32.4] with 32 bytes of data: TCP/IP Protocol Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 Follow these instructions to install the TCP/IP Protocol on one of your PCs only Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 after a network card has been successfully installed inside the PC. These Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 instructions are for Windows 95, 98 or Millennium. For TCP/IP setup under Reply from 24.53.32.4: bytes=32 time<10ms TTL=127 Microsoft Windows NT, 2000, or XP, please refer to your Microsoft Windows NT, 2000, or XP manual. Ping statistics for 24.53.32.4: Packets: Sent = 4, Received = 4, Lost = 0 (0% 1. Click the Start button. Choose Settings, then Control Panel. loss), Approximate round trip times in milli-seconds: 2. Double-click the Network icon. Your Network window should pop up. Minimum = 0ms, Maximum = 0ms, Average = 0ms Select the Configuration tab.

2. Write down the web address returned by the ping command (In the example above: mail.msnv3.occa.home.com.). This web address is the web address assigned to the IP address you just pinged. While the IP address of “mail” could conceivably change, it is likely that this web address will not.

3. Replace your ISP’s abbreviated server address with this extended web address in the corresponding Internet application (web browser, e-mail application, etc.).

Once you have replaced the brief server address with the true server address, your Router should have no problem accessing the Internet through that Internet application.

Figure C-1

3. Click the Add button.

4. Double-click Protocol.

5. Highlight Microsoft under the list of manufacturers.

52 53 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch 6. Find and double-click TCP/IP in the list on the right side. Appendix D: Twisted-Pair Cabling There are different grades, or categories, of twisted-pair cabling. Category 5 is the most reliable and is highly recommended. Category 3 is a good second choice. Straight-through cables are used for connecting computers to a hub. Crossover cables are used for connecting a hub to another hub (there is an exception: some hubs have a built-in uplink port that is crossed internally; this allows you to link or connect hubs together with a straight-through cable instead).

You can buy pre-made Category 5 cabling, or cut and crimp your own. Category 5 cables can be purchased or crimped as either straight-through or Figure C-2 crossover. Inside a Category 5 cable are eight thin, color-coded wires that 7. After a few seconds you will be brought back to the main Network window. run from one end of the cable to the The TCP/IP Protocol should now be listed. other. All eight wires are used. In a straight-through cable, wires 1, 2, 3, and 6 at one end of the cable are also wires 1, 2, 3, and 6 at the other end. In a crossover cable, the order of the wires change from one end to the other: wire 1 becomes 3, and 2 becomes 6. See the dia- grams on the next page Figure D-1 for more detailed infor- mation on straight- through and crossover cabling.

To determine which wire is wire number 1, hold the cable so that the end of the plastic RJ-45 tip (the part that goes into a wall jack first) is facing away from you. Face the clip down Figure C-3 so that the copper side faces up (the springy clip will now be parallel to the floor).When looking down on the copper side, 8. Click OK. Windows may ask for original Windows installation files. Supply wire 1 will be on the far left. them as needed (i.e.: D:\win98, D:\win95, c:\windows\options\cabs.)

9. Windows will ask you to restart the PC. Click Ye s . Figure D-2

The TCP/IP Installation is complete.

54 55 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch Crimpingbles Your Own Network Appendix E: Glossary For Straight-Through Cabling, see Figure D-3 and for Cross-Over Cabling, see Figure D-4. Ad-hoc Network - An ad-hoc network is a wireless network or other small net- work in which some of the network devices are part of the network only for the duration of a communications session, while others stay in close proximity to • Straight-Through Cabling the rest of the network.

BSS (Basic Service Set) - A group of Instant WirelessTM Network PC Card users and a Wireless AP + Cable/DSL Router.

Default Gateway - The router used to forward all traffic that is not addressed to a station within the local subnet.

DHCP (Dynamic Host Configuration Protocol) - A protocol that lets network administrators centrally manage and automate the assignment of Internet Protocol (IP) addresses in an organization's network. Using the Internet's set of protocol (TCP/IP), each machine that can connect to the Internet needs a unique IP address. When an organization sets up its computer users with a con- nection to the Internet, an IP address must be assigned to each machine. Without DHCP, the IP address must be entered manually at each computer and, if computers move to another location in another part of the network, a new IP Figure D-3 address must be entered. DHCP lets a network administrator supervise and dis- tribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network. •Cross-Over Cabling DHCP uses the concept of a “lease” or amount of time that a given IP address will be valid for a computer. The lease time can vary depending on how long a user is likely to require the Internet connection at a particular location. It’s espe- cially useful in education and other environments where users change fre- quently. Using very short leases, DHCP can dynamically reconfigure networks in which there are more computers than there are available IP addresses.

DHCP supports static addresses for computers containing Web servers that need a permanent IP address.

DMZ - A DMZ (demilitarized zone) is a computer host or small network inserted as a “neutral zone” between a company’s private network and the out- side public network. It prevents outside users from getting direct access to a server that has company data. Figure D-4

56 57 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

DNS - The Domain Name System (DNS) is the way that Internet domain IEEE - The Institute of Electrical and Electronics Engineers. The IEEE names are located and translated into Internet Protocol (IP) addresses. A describes itself as “the world's largest technical professional society—promot- domain name is a meaningful and easy-to-remember “handle” for an Internet ing the development and application of electrotechnology and allied sciences address. for the benefit of humanity, the advancement of the profession, and the well- being of our members.” DSSS - Also known as “Direct Sequence Spread Spectrum,” this is a variety of radio transmission methods that continuously change frequencies or signal pat- The IEEE fosters the development of standards that often become national and terns. Direct Sequence Spread Spectrum (DSSS), which is used in CDMA, international standards. The organization publishes a number of journals, has multiplies the data bits by a very fast, pseudo-random bit pattern (PN sequence) many local chapters, and has several large societies in special areas, such as the that “spreads” the data into a large coded stream that takes the full bandwidth IEEE Computer Society. of the channel Infrastructure - An infrastructure network is a wireless network or other small Dynamic IP Address - An IP address that is automatically assigned to a client network in which the wireless network devices are made a part of the network station in a TCP/IP network, typically by a DHCP server. Network devices that through an Access Point that connects them to the rest of the network. serve multiple users, such as servers and printers, are usually assigned static IP addresses. IP Address - In the most widely installed level of the Internet Protocol (IP) today, an IP address is a 32-binary digit number that identifies each sender or ESS - More than one BSS in a network. receiver of information that is sent in packets across the Internet. When you request an HTML page or send e-mail, the Internet Protocol part of TCP/IP FHSS - Also known as “Frequency Hopping Spread Spectrum.” Frequency includes your IP address in the message (actually, in each of the packets if more Hopping Spread Spectrum (FHSS) continuously changes the center frequency than one is required) and sends it to the IP address that is obtained by looking of a conventional carrier several times per second according to a pseudo-ran- up the domain name in the Uniform Resource Locator you requested or in the dom set of channels, while chirp spread spectrum changes the carrier frequen- e-mail address you're sending a note to. At the other end, the recipient can see cy. Because a fixed frequency is not used, illegal monitoring of spread spec- the IP address of the Web page requester or the e-mail sender and can respond trum signals is extremely difficult, if not downright impossible depending on by sending another message using the IP address it received. the particular method. IPCONFIG - A utility that provides for querying, defining and managing IP Firewall - A firewall is a set of related programs, located at a network gateway addresses within a network. A commonly used utility, under Windows NT and server, that protects the resources of a network from users of other networks. 2000, for configuring networks with static IP addresses. (The term also implies the security policy that is used with the programs.) An enterprise with an intranet that allows its workers access to the wider Internet IPSec - IPSec (Internet Protocol Security) is a developing standard for securi- installs a firewall to prevent outsiders from accessing its own private data ty at the network or packet processing layer of network communication. A big resources and to control which outside resources to which its own users have advantage of IPSec is that security arrangements can be handled without access. requiring changes to individual user computers.

Basically, a firewall, working closely with a router program, examines each ISP - An ISP (Internet service provider) is a company that provides individuals network packet to determine whether to forward it toward its destination. and companies access to the Internet and other related services such as website building and virtual hosting. Firmware - Programming that is inserted into programmable read-only mem- ory, thus becoming a permanent part of a computing device.

58 59 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

LAN - A local area network (LAN) is a group of computers and associated PrintServer - A hardware device that enables a printer to be located anywhere devices that share a common communications line and typically share the in the network. resources of a single processor or server within a small geographic area (for example, within an office building). RJ-45 - A connector similar to a telephone connector that holds up to eight wires, used for connecting Ethernet devices. MAC Address - The MAC (Media Access Control) address is a unique num- ber assigned by the manufacturer to any Ethernet networking device, such as a Roaming - The ability to use a wireless device and be able to move from one network adapter, that allows the network to identify it at the hardware level. access point’s range to another without losing the connection.

mIRC - mIRC runs under Windows and provides a graphical interface for log- SNMP (Simple Network Management Protocol) - A widely used network mon- ging onto IRC servers and listing, joining, and leaving channels. itoring and control protocol. Data is passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device NAT - NAT (Network Address Translation) is the translation of an Internet (hub, router, bridge, etc.) to the workstation console used to oversee the net- Protocol address (IP address) used within one network to a different IP address work. The agents return information contained in a MIB (Management known within another network. One network is designated the inside network Information Base), which is a data structure that defines what is obtainable and the other is the outside. from the device and what can be controlled (turned off, on, etc.).

Network Mask - also known as the “Subnet Mask.” SSID (Service Set IDentifier) - A unique name shared among all points in a wireless network. The SSID must be identical for each point in the wireless net- Packet Filtering - Discarding unwanted network traffic based on its originat- work and is case-sensitive. Also known as "ESSID." ing address or range of addresses or its type (e-mail, file transfer, etc.). Static IP Address - A permanent IP address that is assigned to a node in a PCMCIA - The PCMCIA (Personal Computer Memory Card International TCP/IP network. Association) is an industry group organized in 1989 to promote standards for a credit card-size memory or I/O device that would fit into a personal computer, Subnet Mask - The method used for splitting IP networks into a series of sub- usually a notebook or laptop computer. groups, or subnets. The mask is a binary pattern that is matched up with the IP address to turn part of the host ID address field into a field for subnets. Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online. It is used to test and debug a network by send- TCP (Transmission Control Protocol) - A method (protocol) used along with ing out a packet and waiting for a response. the Internet Protocol (IP) to send data in the form of message units between computers over the Internet. While IP takes care of handling the actual deliv- PPPoE (Point to Point Protocol over Ethernet) - A method used mostly by DSL ery of the data, TCP takes care of keeping track of the individual units of data providers for connecting personal computers to a broadband modem for (called packets) that a message is divided into for efficient routing through the Internet access. It is similar to how a dial-up connection works but at higher Internet. speeds and quicker access. TCP/IP - Transmission Control Protocol/Internet Protocol (TCP/IP) is the PPTP (Point-to-Point Tunneling Protocol) - A protocol (set of communication basic communication language or protocol of the Internet. It can also be used rules) that allows corporations to extend their own corporate network through pri- as a communications protocol in a private network (either an intranet or an vate “tunnels” over the public Internet. Effectively, a corporation uses a wide-area extranet). When you are set up with direct access to the Internet, your comput- network as a single large local area network. A company no longer needs to lease er is provided with a copy of the TCP/IP program just as every other computer its own lines for wide-area communication but can securely use the public net- that you may send messages to or get information from also has a copy of works. This kind of interconnection is known as a virtual private network (VPN). TCP/IP.

60 61 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

UDP (User Datagram Protocol) - A communications method (protocol) that offers a limited amount of service when messages are exchanged between com- Appendix F: Specifications puters in a network that uses the Internet Protocol (IP). UDP is an alternative to the Transmission Control Protocol (TCP) and, together with IP, is sometimes Model Number BEFSR41W referred to as UDP/IP. Like the Transmission Control Protocol, UDP uses the Internet Protocol to actually get a data unit (called a datagram) from one com- Standards PC Card 16-bit standard, IEEE 802.3 (10BaseT), puter to another. Unlike TCP, however, UDP does not provide the service of IEEE 802.3u (100BaseTX), IEEE 802.11b dividing a message into packets (datagrams) and reassembling it at the other (Wireless)* end. Specifically, UDP doesn't provide sequencing of the packets that the data arrives in. This means that the application program that uses UDP must be able Protocol CSMA/CD to make sure that the entire message has arrived and is in the right order. Network applications that want to save processing time because they have very Ports small data units to exchange (and therefore very little message reassembling to WAN: One 10Base-T RJ-45 Port for Cable/DSL Modem do) may prefer UDP to TCP. LAN: Four 10/100 RJ-45 Switched Ports, One Shared Uplink Port UTP - Unshielded twisted pair is the most common kind of copper telephone wiring. Twisted pair is the ordinary copper wire that connects home and many Speed business computers to the telephone company. To reduce crosstalk or electro- WAN 10Mbps magnetic induction between pairs of wires, two insulated copper wires are LAN 10/100Mbps (Half Duplex) 20/200Mbps (Full twisted around each other. Each signal on twisted pair requires both wires. Duplex) Since some telephone sets or desktop locations require multiple connections, Wireless* Up to 11 Mbps twisted pair is sometimes installed in two or more pairs, all within a single cable. Cabling Type UTP Category 5 or better

Virtual Server - Multiple servers that appear as one server, or one system Operating Range* Indoors: Up to 300 ft. (91m) image, to the operating system or for network administration (Wireless) Outdoors: Up to 1500 ft. (457m)

WA N - A communications network that covers a wide geographic area, such as LEDs Power, Diag a state or country. WAN WAN LAN 100, Full/Col, Link/Act, WLAN WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64- bit shared key algorithm, as described in the IEEE 802.11 standard.

WINIPCFG - Configuration utility based on the Win32 API for querying, defining, and managing IP addresses within a network. A commonly used util- ity, under Windows 95, 98, and Millennium, for configuring networks with static IP addresses.

62 63 Instant BroadbandTM Series EtherFast® Cable/DSL Wireless-Ready Router with 4-Port Switch

*EnvironmentalOptional WPC11 (sold separately) required Environ Appendix G: Warranty Dimensions 7.31" x 1.88" x 6.16" (186 mm x 48 mm x 157 mm) Information Unit Weight 14.4 oz. (0.40 kg).

Power Input External, 12V DC, 800mA BE SURE TO HAVE YOUR PROOF OF PURCHASE AND A BARCODE Certifications FCC Class B, CE Mark FROM THE PRODUCT'S PACKAGING ON HAND WHEN CALLING. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF Operating Temperature 0ºC to 40ºC (32ºF to 104ºF) PURCHASE. Storage Temperature -20ºC to 70ºC (-4ºF to 158ºF) IN NO EVENT SHALL LINKSYS’ LIABILITY EXCEED THE PRICE PAID Operating Humidity 10% to 85%, Non-Condensing FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDEN- TAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE Support Storage Humidity 5% to 90%, Non-Condensing OF THE PRODUCT, ITS ACCOMPANYING SOFTWARE, OR ITS DOCU- MENTATION. LINKSYS DOES NOT OFFER REFUNDS FOR ANY PROD- UCT.

LINKSYS OFFERS CROSS SHIPMENTS, A FASTER PROCESS FOR PRO- CESSING AND RECEIVING YOUR REPLACEMENT. LINKSYS PAYS FOR UPS GROUND ONLY. ALL CUSTOMERS LOCATED OUTSIDE OF THE UNITED STATES OF AMERICA AND CANADA SHALL BE HELD RESPONSIBLE FOR SHIPPING AND HANDLING CHARGES. PLEASE CALL LINKSYS FOR MORE DETAILS.

64 65 Instant BroadbandTM Series Appendix H: Contact Information

For help with the installation or operation of this product, contact Linksys Customer Support at one of the phone numbers or Internet addresses below.

Sales Information 800-546-5797 (LINKSYS) Tech Support 800-326-7114 RMA Issues 949-261-1288 Fax 949-261-8868 Email [email protected] Web http://www.linksys.com FTP Site ftp.linksys.com

66 http://www.linksys.com

© Copyright 2002 Linksys, All Rights Reserved. Printed in the USA.